X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/6a17b868de5fd4b78988b355b9e1efbb766cd6f2..93df3f5f7318c1aa3f930e9e4f631a2569948149:/src/html/winpars.cpp

diff --git a/src/html/winpars.cpp b/src/html/winpars.cpp
index 13ef2c9ae6..cb4a11b7f1 100644
--- a/src/html/winpars.cpp
+++ b/src/html/winpars.cpp
@@ -110,25 +110,50 @@ void wxHtmlWinParser::RemoveModule(wxHtmlTagsModule *module)
     m_Modules.DeleteObject(module);
 }
 
-void wxHtmlWinParser::SetFonts(const wxString& normal_face, const wxString& fixed_face,
+// build all HTML font sizes (1..7) from the given base size
+static void wxBuildFontSizes(int *sizes, int size)
+{
+    // using a fixed factor (1.2, from CSS2) is a bad idea as explained at
+    // http://www.w3.org/TR/CSS21/fonts.html#font-size-props but this is by far
+    // simplest thing to do so still do it like this for now
+    sizes[0] = int(size * 0.75); // exception to 1.2 rule, otherwise too small
+    sizes[1] = int(size * 0.83);
+    sizes[2] = size;
+    sizes[3] = int(size * 1.2);
+    sizes[4] = int(size * 1.44);
+    sizes[5] = int(size * 1.73);
+    sizes[6] = int(size * 2);
+}
+
+static int wxGetDefaultHTMLFontSize()
+{
+    // base the default font size on the size of the default system font but
+    // also ensure that we have a font of reasonable size, otherwise small HTML
+    // fonts are unreadable
+    int size = wxNORMAL_FONT->GetPointSize();
+    if ( size < 10 )
+        size = 10;
+    return size;
+}
+
+void wxHtmlWinParser::SetFonts(const wxString& normal_face,
+                               const wxString& fixed_face,
                                const int *sizes)
 {
-    static int default_sizes[7] =
-        {
-            wxHTML_FONT_SIZE_1,
-            wxHTML_FONT_SIZE_2,
-            wxHTML_FONT_SIZE_3,
-            wxHTML_FONT_SIZE_4,
-            wxHTML_FONT_SIZE_5,
-            wxHTML_FONT_SIZE_6,
-            wxHTML_FONT_SIZE_7
-        };
+    static int default_sizes[7] = { 0 };
+    if ( !sizes )
+    {
+        if ( !default_sizes[0] )
+            wxBuildFontSizes(default_sizes, wxGetDefaultHTMLFontSize());
 
-    if (sizes == NULL) sizes = default_sizes;
+        sizes = default_sizes;
+    }
 
     int i, j, k, l, m;
 
-    for (i = 0; i < 7; i++) m_FontsSizes[i] = sizes[i];
+    for (i = 0; i < 7; i++)
+        m_FontsSizes[i] = sizes[i];
+
     m_FontFaceFixed = fixed_face;
     m_FontFaceNormal = normal_face;
 
@@ -153,22 +178,15 @@ void wxHtmlWinParser::SetStandardFonts(int size,
                                        const wxString& normal_face,
                                        const wxString& fixed_face)
 {
-    wxFont defaultFont = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
+    if (size == -1)
+        size = wxGetDefaultHTMLFontSize();
 
     int f_sizes[7];
-    if (size == -1)
-        size = defaultFont.GetPointSize();
-
-    f_sizes[0] = int(size * 0.6);
-    f_sizes[1] = int(size * 0.8);
-    f_sizes[2] = size;
-    f_sizes[3] = int(size * 1.2);
-    f_sizes[4] = int(size * 1.4);
-    f_sizes[5] = int(size * 1.6);
-    f_sizes[6] = int(size * 1.8);
-
-    wxString normal = normal_face.empty() ?
-                      defaultFont.GetFaceName() : normal_face;
+    wxBuildFontSizes(f_sizes, size);
+
+    wxString normal = normal_face;
+    if ( normal.empty() )
+        normal = wxNORMAL_FONT->GetFaceName();
 
     SetFonts(normal, fixed_face, f_sizes);
 }